Enhancing Charge Separation in Photocatalysts with Internal Polar Electric Fields

Zaizhu Lou; Peng Wang; Baibiao Huang; Ying Dai; Xiaoyan Qin; Xiaoyang Zhang; Yuanyuan Liu

doi:10.1002/cptc.201600057

journal article Feb 22, 2017

Enhancing Charge Separation in Photocatalysts with Internal Polar Electric Fields

Zaizhu Lou

Peng Wang

Baibiao Huang

Ying Dai

Xiaoyan Qin Xiaoyang Zhang

Yuanyuan Liu

ChemPhotoChem Vol. 1 No. 5 pp. 136-147 · Wiley

View at Publisher Save 10.1002/cptc.201600057

Abstract

AbstractThe main limitations on photocatalytic efficiency are the recombination of photogenerated electrons and holes and a narrow light response. In this Minireview, we focused on photocatalytic materials with an internal polar electric field. The development and application of these compounds is one of the most efficient strategies to promote the separation of photogenerated electrons and holes, leading to high photocatalytic efficiency. This Minireview describes the fundamental operating principles of photocatalysts with a built‐in polar electric field and discusses the mechanism for polar‐electric‐field‐enhanced charge separation. We also review recent reports on photocatalytic systems using an internal polar electric field to separate photogenerated electrons and holes, focusing particularly on layer‐structure polar photocatalysts, silver silicates, and single‐crystal ZnO photocatalysts. Charge separation enhanced by an internal polar electric field provides the basis for designing new high efficiency photocatalysts.

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Citations

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References

Details

Published: Feb 22, 2017
Vol/Issue: 1(5)
Pages: 136-147
License: View

Authors

Z

Zaizhu Lou